Aquamarine and Schorl Crystals on Feldspar Matrix - NERA 004

Aquamarine and schorl crystals on feldspar matrix



Measurements:  26 x 25 x 17 mm

Description:  A small aquamarine crystal (16 x 03 x 03 mm) sits partially embedded in a schorl crystal (08 x 07 mm) on feldspar, with traces of schorl. 

The aquamarine and schorl has a few very small nicks.

Weight of Specimen:  10.8 g

Chemical Composition:  Be3Al2Si6O18  (aquamarine) 
                                    NaFe2+3Al6Si6O18(BO3)3(OH)4
 (schorl)
                                    KAlSi3O8  
(feldspar) 

Hardness on Mohs Scale:  (aquamarine) 7.5 - 8.0
                                      (feldspar)  6 - 6.5
                                      (schorl) 7.5

Location:  Erongo, Namibia

Specimen Code:  NERA 004

US $ 35





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